scholarly journals Structural Insights of Humins/Epoxidized Linseed Oil/ Hardener Terpolymerization

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1583
Author(s):  
Erol Licsandru ◽  
Marc Gaysinski ◽  
Alice Mija
Keyword(s):  
Structural Study ◽  
13C Nmr ◽  
Linseed Oil ◽  
Focused Attention ◽  
Thermosetting Resins ◽  
1H And 13C Nmr ◽  
Ft Ir ◽  
Structural Insights ◽  
Epoxidized Linseed Oil

Bio-based thermosetting resins were synthesized from a ternary composition: humins; epoxidized linseed oil (ELO); and an industrial hardener, Capcure3-800 (CAP). Humins are in a focused attention in the last years, as biorefinery by-product, therefore its valorization through materials design is very important. Here we present a structural study of terpolymerization of humins/ ELO/CAP. The reactivity of these systems was highlighted by in situ FT-IR and 1H and 13C NMR. The integration of humins in thermosetting resins gives alternatives to new feedstocks for future bio-based materials.

scholarly journals Yield and Selectivity Improvement in the Synthesis of Carbonated Linseed Oil by Catalytic Conversion of Carbon Dioxide

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 852
Author(s):  
David Alejandro González Martínez ◽  
Enrique Vigueras Santiago ◽  
Susana Hernández López
Keyword(s):  
Carbon Dioxide ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
13C Nmr ◽  
Catalyst Concentration ◽  
Linseed Oil ◽  
Proton Nuclear Magnetic Resonance ◽  
Ft Ir ◽  
Epoxidized Linseed Oil ◽  
Nuclear Magnetic

Carbonation of epoxidized linseed oil (CELO) containing five-membered cyclic carbonate (CC5) groups has been optimized to 95% by reacting epoxidized linseed oil (ELO) with carbon dioxide (CO2) and tetrabutylammonium bromide (TBAB) as catalysts. The effect of reaction variables (temperature, CO2 pressure, and catalyst concentration) on the reaction parameters (conversion, carbonation and selectivity) in an autoclave system was investigated. The reactions were monitored, and the products were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), carbon-13 nuclear magnetic resonance (13C-NMR) and proton nuclear magnetic resonance (1H-NMR) spectroscopies. The results showed that when carrying out the reaction at high temperature (from 90 °C to 120 °C) and CO2 pressure (60–120 psi), the reaction’s conversion improves; however, the selectivity of the reaction decreases due to the promotion of side reactions. Regarding the catalyst, increasing the TBAB concentration from 2.0 to 5.0 w/w% favors selectivity. The presence of a secondary mechanism is based on the formation of a carboxylate ion, which was formed due to the interaction of CO2 with the catalyst and was demonstrated through 13C-NMR and FT-IR. The combination of these factors makes it possible to obtain the largest conversion (96%), carbonation (95%), and selectivity (99%) values reported until now, which are obtained at low temperature (90 °C), low pressure (60 psi) and high catalyst concentration (5.0% TBAB).

A structural study of silicon-based interpenetrating polymer networks by solid state 1H and 13C NMR spectroscopy

2002 ◽  
Vol 602-603 ◽  
pp. 321-333 ◽  
Author(s):  
Masatoshi Kobayashi ◽  
Shigeki Kuroki ◽  
Isao Ando ◽  
Kazuo Yamauchi ◽  
Hideaki Kimura ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Structural Study ◽  
13C Nmr ◽  
Polymer Networks ◽  
13C Nmr Spectroscopy ◽  
Interpenetrating Polymer Networks ◽  
1H And 13C Nmr ◽  
Silicon Based

Mn(II), Cu(II) and Cd(II) p-coumarates: FT-IR, FT-Raman, 1H and 13C NMR and thermogravimetric studies

2013 ◽  
Vol 103 ◽  
pp. 264-271 ◽  
Author(s):  
M. Kalinowska ◽  
B. Laderiere ◽  
P. Champagne ◽  
M. Kowczyk-Sadowy ◽  
W. Lewandowski
Keyword(s):  
13C Nmr ◽  
1H And 13C Nmr ◽  
Ft Ir ◽  
Thermogravimetric Studies ◽  
Ft Raman
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